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What form of motor protein moves on actin? What form of motor protein moves on microtubules? Which are AAA proteins?

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Final answer:

Myosin is the motor protein that moves on actin filaments, while dynein and kinesin are the motor proteins that move on microtubules. Dynein and kinesin are also examples of AAA proteins, which use ATP hydrolysis to power various cellular functions.

Step-by-step explanation:

The form of motor protein that moves on actin filaments is myosin. Myosin moves along actin filaments by converting the chemical energy stored in ATP into mechanical work, which is a fundamental process in muscle contraction and other cellular movements. On the other hand, the motor proteins that move along microtubules are dynein and kinesin. These motor proteins are essential for the transport of various types of cargo, such as organelles and vesicles, across the cell. Dynein primarily drives the retrograde transport toward the cell center, while kinesin handles the anterograde transport toward the periphery of the cell.

AAA proteins, also known as AAA+ (ATPases Associated with diverse cellular Activities) proteins, represent a large family of ATPases that are involved in a variety of cellular processes, including membrane fusion, protein unfolding, and the regulation of microtubule dynamics. Both dynein and kinesin are considered AAA proteins because they use ATP hydrolysis to facilitate conformational changes needed for their motor activity.

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